[EvilDragon]

Originally Posted by Zirrex

Is this normal? https://streamable.com/xjmr9
No plug-in. Empty project.

0.3% when play
3.4% when press "Rec". Only press! No record!

Yes, because when playing Reaper uses anticipative processing to utilize the CPU better. When tracks are armed and recording it cannot do this ahead-of-time processing.